Lucene example source code file (TestAssertions.java)

This example Lucene source code file (TestAssertions.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Lucene tags/keywords

analyzer, assertionerror, assertionerror, io, override, override, reader, reader, testanalyzer2, testanalyzer3, testanalyzer4, testtokenstream2, testtokenstream3, tokenstream, tokenstream

The Lucene TestAssertions.java source code

package org.apache.lucene;

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.Reader;

import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;

public class TestAssertions extends LuceneTestCase {

  public void testBasics() {
    try {
      assert Boolean.FALSE.booleanValue();
      fail("assertions are not enabled!");
    } catch (AssertionError e) {
      assert Boolean.TRUE.booleanValue();
    }
  }
  
  static class TestAnalyzer1 extends Analyzer {
    @Override
    public final TokenStream tokenStream(String s, Reader r) { return null; }
    @Override
    public final TokenStream reusableTokenStream(String s, Reader r) { return null; }
  }

  static final class TestAnalyzer2 extends Analyzer {
    @Override
    public TokenStream tokenStream(String s, Reader r) { return null; }
    @Override
    public TokenStream reusableTokenStream(String s, Reader r) { return null; }
  }

  static class TestAnalyzer3 extends Analyzer {
    @Override
    public TokenStream tokenStream(String s, Reader r) { return null; }
    @Override
    public TokenStream reusableTokenStream(String s, Reader r) { return null; }
  }

  static class TestAnalyzer4 extends Analyzer {
    @Override
    public final TokenStream tokenStream(String s, Reader r) { return null; }
    @Override
    public TokenStream reusableTokenStream(String s, Reader r) { return null; }
  }

  static class TestTokenStream1 extends TokenStream {
    @Override
    public final boolean incrementToken() { return false; }
  }

  static final class TestTokenStream2 extends TokenStream {
    @Override
    public boolean incrementToken() { return false; }
  }

  static class TestTokenStream3 extends TokenStream {
    @Override
    public boolean incrementToken() { return false; }
  }

  public void testTokenStreams() {
    new TestAnalyzer1();
    
    new TestAnalyzer2();
    
    try {
      new TestAnalyzer3();
      fail("TestAnalyzer3 should fail assertion");
    } catch (AssertionError e) {
    }
    
    try {
      new TestAnalyzer4();
      fail("TestAnalyzer4 should fail assertion");
    } catch (AssertionError e) {
    }
    
    new TestTokenStream1();
    
    new TestTokenStream2();
    
    try {
      new TestTokenStream3();
      fail("TestTokenStream3 should fail assertion");
    } catch (AssertionError e) {
    }
  }

}